Pneumatic apparatus for propelling vessels



(No Model.)

v PNEUMATIC APPARATUS FOR PROBELLING VESSELS. No. 486,350. PatentedSept. 16,1890).

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JAMES M. GLENN, OF CINCINNATI, OHIO.

PNEUMATIC APPARATUS FOR PROPELLING VESSELS..

SPECIFICATION formingpart of Letters Patent No. 436,350, dated September16, 1890.

Application filed July 3, 1889. Serial No. 316,462. (No model.) 7

To all whom it may concern.-

Be it known that I, JAMES M. GLENN,a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Pneumatic Apparatusfor the Propulsion of Vessels, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming part of this specification.

My invention relates to all classes of vessels, and has for its objectthe provision of novel means for propelling and steering the same.

The novelty of my invention will be herein set forth, and specificallypointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal section of aboat fitted out with my improved apparatus. Fig. 2 is a rear elevationof the same. Fig. 3 is an enlarged plan of the rear half of the same.

The same letters of reference are used to indicate identical parts inall the figures.

A is a boat of any suitable construction, having fitted within it anair-pump or pressure-blower B, driven by any suitable power andcommunicating by a pipe C with an airchamber D. At the rear of the boaton its under side is a chamber E, open at the bottom and rear end andso. constructed as to be always submerged and preferably rectangular incross-secti0n. I A pipe F extends from the chamber D and opens with aflaring mouth a into the forward end of the chamber E. Any suitablevalve 19 is provided for the pipe F to control the admission of air fromthe chamber D into the chamber E, and the pressure of the air from thepipe F against the water in the chamber E propels the boat. The chamberE is provided with an adjustable hinged deflecting-board c, hinged as atd and adjusted by the screw 6 to prevent the escape of the air along thetop of the chamber and to thereby secure its best results in propellingthe boat.

G G, Fig. 3, are two pipes extending back from the chamber D to thestern of the vessel beneath the water-line on each side, and areslightly curved outward, as shown. These pipes are likewise providedwith suitable valves f, and their purpose is to steer the vessel by thepressure of the air through them against the water, as will be readilyunderthe pressure of the water,but which is opened to permit the backingof the vessel by the pressure of the air through the pipe II.

By providing the enlarged chamber E at the rear end of the vessel, intowhich the airpipe of lesser diameter enters, a greater space for theexpansion of air is provided, and such expansion is forced to be made ina course directly backward. Furthermore, such chamber enables theintroduction of the adjustable deflecting-board.

Having thus fully described my invention, I claim- 1. In pneumaticpropelling. apparatus for vessels, the combination, with the vessel, ofan air-pump or blower, a chamber receiving the air from said pump orblower, and a downwardly and rearwardly open dischargingchamber formedin the bottom of the vessel at its rear end, and a pipe of less diameterthan the said discharging-chamber connect ing it with thefirst-mentioned chamber, substantially as and for the purpose described.

2. In pneumatic propelling apparatus for vessels, the combination,with avessel, of an air-pump or blower, a chamber receiving the air from saidpump or blower, and a downwardly and rearwardly open dischargingchamberformed in the bottom of the vessel at its rear end, and a pipe of lessdiameter than the said discharging-chamber connecting it with thefirst-mentioned chamber, said last-mentioned discharging-chamber beingprovided with an adjustable deflector, substantially as and for thepurpose described.

3. In pneumatic propelling apparatus for vessels, the combination, withthe vessel, of an air-pump or blower, a chamber receiving the air fromsaid pump or blower, a downwardly and rearwardly open dischargingchamberformed in the bottom of the vessel at its rear end, and a pipe of lessdiameter than the said discharging-chamber connecting it'with thefirst-mentioned chamber, and pipes controlled by valves leading fromsaid first-mentioned air-chamber to the rear of the Vessel below theWater-line, substantially as and for the purpose described.

4:. The pneumatic propelling apparatus for Vessels, consisting of thecombination of the air-pump B, chamber D, connecting-pipe 0,

chamber E, formed in the bottom of the vessel at its rear end, pipe F,of less diameter than said chamber E, connecting it with the chamberD,pipes H, leading from chamberD to openings at the bow of the vessel,and the two steering-pipes G, leading from chamber D to the stern of thevessel, one on each side of chamber E, substantially as described.

JAMES M. GLENN. Witnesses:

EDWARD REcToR, CHARLES BILLON.

